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Opal from Bolívar, Venezuela

Venezuela
 
  • Bolívar
    • Gran Sabana Municipality
      • Auyán-tepui (Auyán-tepuy; Ayan Tepui)
Sauro, F., De Waele, J., Forti, P., Ermanno, G., Vergara, F. (2013) Speleogenesi e speleotemi di opale della Cueva Guacamaya, Auyan Tepui, Gran Sabana, Venezuela. In: Cucchi, F., Gudi, P. (eds.), Atti del XXI Congresso Nazionale di Speleologia “Diffusione delle conoscenze”, Sessione Attività di esplorazione e ricerca. Trieste 2-5 giugno 2011. Edizioni Università di Trieste, Trieste, 461-469.
Sauro, F., De Vivo, A., Vergara, F., De Waele, J. (2013) Imawarì Yeuta: a new giant cave system in the quartz sandstones of the Auyan Tepui, Bolivar state, Venezuela. Proceedings of the 16th International Congress of Speleology, 2, 19-27.
BOLETÍN INFORMATIVO DE LA COMISIÓN DE GEOESPELEOLOGÍA (Federación Espeleológica de América Latina y el Caribe -FEALC-) No. 13, Octubre 1999
      • Chimantá Massif (Chimantha Massif)
Galli, E., Brigatti, M. F., Malferrari, D., Sauro, F., De Waele, J. (2013) Rossiantonite, Al3(PO4)(SO4)2(OH)2(H2O)10·4H2O, a new hydrated aluminum phosphate-sulfate mineral from Chimanta massif, Venezuela: Description and crystal structure. American Mineralogist, 98 (10) 1906-1913 doi:10.2138/am.2013.4393
Franco Urbani, Bogdan P. Onac (2017) A Native Aluminum Occurrence in Roraima South Cave, Venezuela. In 17th International Congress of Speleology (No. I, pp. 272). Australian Speleological Federation Inc.
 
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